Canister-holding housing of emergency mask



FIG. 1 is a perspective view of the canister-holding housing of emergency mask;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a cross-sectional view thereof, taken along the line 7--7 of FIG. 2. 

The ornamental design for a canister-holding housing of emergency mask, as shown and described. 